Conductive slip ring capable of automatically keeping contact force

Abstract

The invention discloses a conductive slip ring capable of automatically keeping contact force. The conductive slip ring comprises a stator disc and a rotor disc; the circle centers of the stator disc and the rotor disc are connected through a rotating shaft; a retainer ring is arranged on the outer side of the axial connection of the rotating shaft and the stator disc and the rotor disc; a plurality of insulating plastic rings are embedded on the stator disc at intervals and protrude out of the surface of the stator disc, conducting rings are arranged on the inner sides of the circumferences of the insulating plastic rings, terminals are fixedly connected to the rotor disc, spring pieces are arranged between the stator disc and the rotor disc, and wires, connecting terminals and spring pieces are arranged in the rotor disc, contacts are arranged on the outer side edges of one ends, close to the stator disc, of the spring pieces and contact with the inner sides of the circumferences of the conducting rings, and lead blocks are arranged on the inner side edges, opposite to the contacts, of the spring pieces; and when the rotor disc rotates, pressure of the contacts to the conducting rings is formed through centrifugal force of the lead blocks and elastic force of the spring pieces. According to the conductive slip ring of the invention, the spring pieces are used as electric brushes, the lead blocks are fixed to the back faces of the spring pieces, the spring pieces and the conductive rings are in tight contact under the centrifugal force effect, and the contact force is not reduced due to abrasion of a contact area.

Description

technical field [0001] The invention relates to the technical field of conductive slip rings, in particular to a conductive slip ring with automatic contact force maintenance. Background technique [0002] In the case that radar communication equipment, automatic processing equipment, wire stranding machine, etc. need to connect the rotating part of the circuit with the static part of the circuit, it is necessary to use a conductive slip ring to realize the current transmission of the dynamic and static circuit. In the prior art, conduction is realized through the sliding friction between the brush and the conductive ring. In the patent No. CN201921924967.3 "a large through-hole slip ring structure", one end of the slip ring structure is fixedly connected with an output line, and a detachable connection structure is inserted into the fixed structure to make the mechanism more efficient during operation. stability. In the patent number CN201310177971.9 "Slip ring structure ...

AI Technical Summary

Problems solved by technology

However, there are still some problems: due to the wear of the sliding electrical contact part, gaps are likely to occur between the brush and the conductive ring, resulting in an open circuit; and mechanical vibration causes intermittent contact, which affects the reliability of current transmission; the conductive ring and the brush rub for a long time , easy to wear, resulting in abrasive particles, abrasive particles fly away and cause other parts to short circuit, or enter other contact surfaces to cause wear; brushes will generate arcs during energized movement

Existing technical solutions cannot solve these problems

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